Gas-stove.



No. 733,707. PATENTED JULY 14, 1903. H. ELDRIDGE.

GAS STOVE.

APPLICATION FILED MAB. 18-.1903.

N0 MODEL ZSHEETS-SHEET E 20 1* Z f I 3/ 30 I N I I! .30 w 1 1M 14 A? -iI 56' t l 36 H 3, i m l h 6 A v PATENTED JULY 14, 1903. I H. ELDRIDGE.

GAS STOVE.

APPLICATION nun MAR. 18', 1903.

2 SHEETS-SHEET 2 UNITED STATES.

Patented July l4, 19033 PATENT OFFICE.

HILLIARY ELDRIDGE, OF JERSEY CITY, NEIV JERSEY, ASSIGNOR TO SEO- RETARY,OF NEIV YORK, N. Y., A CORPORATION 'OF NEW YORK.

GAS-STOVE.

SPECIFICATION forming part of Letters Patent No. 733,707, dated July 14,1903.

Application filed March 18, 1903.

. To all whom, it may concern:

Be it known that I, HILLIARY ELDRIDGE, a

citizen of the United States, residing at J ersey City, in the county ofHudson and State of New Jersey, have invented certain new and usefulImprovements in Gas-Stoves, of which the following is a specification.

This invention relates to improvements in gas-stoves of the kind thatare especially designed to be attached to the ordinary gasburners forheating purposes.

The object of the invention is to produce a gas-stove that will have thegreatest possible area of heat-radiating surface consistent with theleast consumption of gas. This isaccomplished by constructing theheating parts of the stove in cylindrical form-that is, providing aninner cylinder of some fireproof material-forinstance, metal,magnesia,clay, or the like-and surrounding the said cylinder with a largercylinder of foraminous material, preferably an asbestos fabric that canbe heated to the proper condition.

By the above-described arrangement a combustion-chamber is formedbetween the inner and outer cylinders, and the gases are admitted tothis chamber through a Bunsen burner covered by any suitable screen andprovided with gas-outlets interjacent to the two cylinders. The burninggases in this chamber will rise and completely envelop the innercylinder and be reflected against the foraminous outer cylinder, fromwhich the heat is effectually radiated.

If deemed advisable, the stove can be inclosed in any suitablemannersuch, for instance, as by a perforated metal shield or a suitableframe provided with transparent sections of mica or the like.

The invention consistsin the peculiar construction and arrangement ofparts for producing the desired results, all as hereinafter fullydescribed,and more particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a central vertical section ofthe stove and its supporting-base. Fig. 2 is a horizontal section on theline A A, Fig. 1. Fig. 3 is a plan view of the cap covering thecombustionchamber. Fig. 4is a central vertical section Serial No.148.370. (No model.)

of the stove, showing a modified form of construction.

l is a hollow support or base, of any suitable material, into whichpasses a gas-supply pipe 2, said pipe having an upwardly-project- 5 5ing portion 3 centrally located in said base or support. Connected tothe supply-pipe 3 is a Bunsen burner 4, provided with suitable lateralair-inlets 5. The base or support 1' has a conical recess therein inwhich the Bun- 6o sen burner is located, air being admitted tosaid'burner, as shown by arrows in Fig. 1. Suitably secured to theBunsen burner and forming part thereof is a flanged base-block 6, whichis adapted to support the stove proper and all its parts. In the lowerportion of this block, or that part which engages the Bunsen burner, isa chamber wherein the gases are mixed and from which they flow throughopenings .9 intoa thimble-shaped screen 8, of any suitable material.Projecting upwardly from the block 6 is an annular flange 10, whichengages the screen 8 and holds it in proper position, where it issupported by the reduced upwardly-projecting central portion 11 of theblock 6, said screen being pierced to receive therethrough a tie-rod 12,which is tapped or otherwise suitably secured in the central portion 11.Supported on the top of the screen 8 and the upwardly-projecting por-8.0

tion 11 of the base-block 6 is a cylindrical shell 14, constructed ofany suitable material-for instance, metal with a polished exteriorsurface or fire-clay or magnesia with a glazed surface. By polishing orglazingthe surface of the cylinder. the heat will be reflected againstthe inner wall of the surrounding foraminous cylinder 20 and tend toeffectually increase heat radiation. When this heatrefiecting cylinderis constructed of metal, 0 it is usually made in the form shown in Fig.1that is, tubing is employed and caps 14:

placed on each end thereof to prevent the ignited gases from enteringsaid cylinder.

Surrounding the cylinder 14 is a cylinder 5 20, of foraminous material,that is suspended in the desired position by suitable nuts 21 22,

engaging the tie-rod 12, the lower end of the foraminous cylinder beingheld'in position by an upwardly-projecting circumferential 1C0 rib 16 onthe block 6. The nut 21 engages the upper threaded end of the tie-rod'12and is provided with a flange 21, upon which rests the intnrned end ofthe foraminous cylinder. The nut 22 is also adapted to engage the upperthreaded end of the tie-rod 12 and has a flange 22, similar to that ofthe nut 21, the under part of said flange engaging the intnrned portion20' of the foraminous cyliuder. Thus it will be seen that when theforaminous cylinder 20 is placed in position over the circumferentialrib 16 and the intnrned portion 20 rests on the flange of nut 21 the nut22 can be adjusted on the tie-rod 12 and turned down until its flange22' grips the intnrned portion 20 of the cylinder and securely bindssaid portion between the flanges of the two nuts, thereby securingtheforaminous cylinderin the proper suspended position. The nut 21 isprovided with openings 21", forming a flue to permit the products ofcombustion to escape through the top of the stove. The nut 22 hasopenings 22 for the same purpose as those explained for the nut 21. Abinding-nut25 engages the tie-rod l2 and securely retains the flangednuts 21 and 22 in adjusted position.

A vertical combustion-chamber 26 is formed between the inner imperforatecylinder and the foraminous cylinder, into which flow the gases throughthe openings 9, leading from the mixing-chamber 7 into the screen 8. Thescreen 8 is thimble-shaped and covers the circular opening 28, throughwhich the gases pass from the burner into the combustionchamber. Theburning gases in the combustion-chamber will impinge the inner wall ofthe foraininous cylinder, as shown by the arrows in Fig. 1, and bedeflected directly up the combustion-chamber between the two cylinders,the inner cylinder constantly tending to reflect the heat against theforaminous cylinder, so that the said foraminous cylinder will be heatedequally from bottom to top, thereby causing uniform heat radiation.

Surroundingthe stove proper is a casing or shield 30, that can beconstructed of any suitable material and in any desired manner or form,but herein shown cylindrical and having perforations 31, through whichthe condition of the stove proper may be remarked. This shield is notessential to the construction of the stove and is not employed toincrease or diminish the heating qualities thereof, it being used toprevent accidental contact with the heated foraminous cylinder. The topof the shield or casing is covered with a cap or hood 32, which may beconstructed in any suitable design or formation and is open at the topin the manner shown at 33 for the purpose of allowing the products ofcombustion to escape after being emitted from the combustion-chamber.

A modified form of the stove is shown in Fig. 4, wherein the centralportion 11 of the block 6 is omitted, as is also the tie-rod 12 and theheat-reflecting cylinder let. The arrangement of the Bunsen burner, themixingchamber in the block 6, and the thimbleshaped screen 8 is the sameas shown in Fig. 1. The removal of the heat-reflecting cylinder willallow the burning gases to escape into the combustion-chamber with morefreedom and heat the foraminous cylinder to the desired intensity. Thecylinder 20 is supported in its proper position by having its intnrnedflanges 20 on the upper end of said cylinder engaged underneath by aflanged cap 35. or casing is a plate 36, that has an annular recess 37,into which fits the flanged cap 35 in such manner that the intnrnedflanges 20 of the cylinder will be engaged and supported by the said cap35 and plate 36. flanged cap 35 and the plate 36 are held together bymeans of a bolt 38, that passes centrally therethrough and is engaged bya nut 30, the flanged cap 35 and the supportingplate 36 having openings35 and 36' therein, through which the products of combustion escape fromthe combustion-chamber.

Of course it is obvious that changes in the details of construction andpractical application can be made Without in any manner departing fromthe spirit of the invention. For example, while I have shown anddescribed and particularly claimed the cylindrical form as havingparticular advantages other similar forms are advantageous also ongrounds of beauty or for the purpose of producing a variety of designs.

Having thus described my invention, the following is what I claim as newtherein and desire to secure by Letters Patent:

1. In a stove, the combination of aBunsen burner, a base-block supportedthereon, a heat-reflecting cylinder located above the base-block, aforaminous cylinder surrounding the heat-reflecting cylinder and forminga combustion-chamber between said cylinders, and a screen attached tothe base-block under the heat-reflecting cylinder in such manner as toform an annular ingress for the gases from the Bunsen burner.

2. In a stove, the combination of a Bunsen burner, a base-blocksupported thereon, a heat-reflecting cylinder supported on saidbase-block, a foraminous cylinder surrounding the heat-reflectingcylinder and forming a combustion-chamber between said cylinders, ascreen attached to the base-block under the heat-reflecting cylinder insuch manner as to form an annular ingress to the combustion-chamber forthe gases from the Bunsen burner, and a shield surrounding theforaminous cylinder and supported on the baseblock, for the purposesdescribed.

3. In a stove, the combination of a Bunsen burner, a base-blocksupported thereon, a screen seated in an annular recess in thebaseblock, a heat reflecting cylinder located above the screen, aforaminous cylinder surrounding the heat-reflecting cylinder and forminga combustion-chamber between the Supported on the top of the shield Thecylinders, a vertical tie-rod secured in the base-block, and meansengaging said rod to support the cylinders in proper position and withproper relation to each other, for the purpose explained.

4. In a stove, the combination of a Bunsen burner, a base-blocksupported thereon, a cylinder of foraminousfrnaterial supported on saidblock, a heat-reflecting cylinder within said foraminous cylinder, a rodattached to the block, apertured nuts engaging'the rod and foraminouscylinder, and a screen under the heatreflecting cylinder covering thegas-inlet to the foraminous cylinder.

5. In a stove, the combination of a Bunsen burner, a base-blocksupported thereon, a rod attached to the block, a flanged nut on therod, a foraminous cylinder having an in- HILLIARY ELDRID GE.

Witnesses:

WM. A. COURTLAND, J. GREEN.

